Fiat-Crypto Cross-Border Instant Transactions Platform

The WhatsApp bot-based platform for instant and commission-less transactions between the United States and Latin America throughout the second-layer BTC technology.

Challenges Solved

Providing a full-fledged financial service (registration, verification, partner selection, entering amounts, tracking) through the WhatsApp messenger interface, which is not intended for complex operations and has strict restrictions on interaction and display of information.
Ensuring instant user experience despite potential delays of a few days due to cross-border nature, different currencies and the work of partners through the possible use of pre-financing partners' pools for instant payouts.
Seamless integration with heterogeneous partners (banks, money transfer points, e-commerce, retail) for a single service of sending/receiving money.

Providing a functional conversion of fiat-BTC when not all partners (especially traditional banks/retail) can or want to provide this service directly.
Ensuring compliance with strict data security requirements, especially financial and KYC, for users from different countries (US, Middle East) with different regulatory regulations, including GDPR, local laws.

Since MVP is already in production, now we focus on growth and expansion of partners to add more top-up ways (including cash), and creating the division into B2B and B2C sectors.

Benefits We Built

For Our Client:

Earn fees from integrated On-ramp & Off-ramp partners (banks, remittance points, fintech apps, etc.) on their top-up and cash-out transactions.
Reduce operational costs & complexity with the Lightning Network for low-cost, instant BTC conversions and cross-border settlements, bypassing traditional slow and expensive methods.
Attract and retain users via offering customers instant transfers, low/no internal fees, price stability on large transactions, enhanced security and referral commissions.
Ensure platform control & compliance through the comprehensive admin panel for full oversight of transactions, user accounts, fraud monitoring, and adherence to country regulations.

Minimize fraud & enhance security: Benefited security from a multi-layered security approach (OTP, RBAC, KYC PIN, HTTPS, encrypted AWS vaults, IP whitelisting, MetaMap ID verification).
Easily add new On-ramp/Off-ramp partners and segment the business into B2B partners and B2C end-users models.
Receive a complete, production-ready platform (Web app, Cloud server, WhatsApp bot, Admin interface) built with a modern stack.

For Off & On Ramp Partners:

Hold liquidity pools for instant payouts that allow tracking the increase in transactions due to the improved liquidity.
Handle transactions with fiat money only, since the system handles all BTC conversions.
Earn money on fees from top-up and cash-out transactions that are settled through their local bank transfers.
Gain new users.

For Customers:

Send and receive money instantly between different countries.
No/low commission for transactions between in-system accounts.
Smoothed out price fluctuations in large transactions.
Minimized impact of individual transactions on the overall market.
Account ID verification, encryption of personal ID data as well as funds and transactions thanks to blockchain.
Transparency in currency exchange.
Receive a referral commission for inviting new users to the system.

Key Modules & Features

WhatsApp Bot

The platform’s main interface for instantiated commission-free transactions between the US and Middle East through a second layer of BTC technology.

Lightning Network Exchange

Core system for instant cross-border transactions. Converts a fiat to BTC and back to USD via the Lightning Network to fund the recipient’s account.

On/Off-Ramp Partners Integration

Integration with partners (banks, redemption points, fintech-apps, maps, giftcards) for top-up and cache-out in Fiat or BTC.

Liquidity Pools

Deposit funds to partners for quick replenishment and withdrawal of users' funds. Provides rebalancing of pools for speed and continuity.

Admin Panel & MetaMap KYC and Verifications

Admin interface for full control of transactions and client accounts by admins. Functions: remittance management, transaction monitoring, fraud tracking, reporting, compliance. Identification of users through ID-verification via MetaMap. KYC PIN check during registration and transactions. Encryption of personal ID data using blockchain.

Multi-security

OTP authentication for admin access. Role-based access (RBAC) with throttling (SuperAdmin/Admin). HTTPS encryption of traffic. AWS encrypted stores. IP validation for BDs and servers.

Referral system

Referral commission for users for attracting new customers to the system.

Technology Stack Used

Typescript

Next.JS

Nest.JS

PostgreSQL

AWS

Timeline

1 year of development, MVP in production, expansion in progress

Services We Provide

Development of the core Backend platform logic, APIs, and server-side infrastructure.
Building the Front end for the concept showcase website and admin panel.
Designing the UX/UI flows, particularly for the WhatsApp bot interaction and admin panel.
Conducting in-depth analysis for business logic, flow optimization within bot constraints, security requirements, partner integrations, and regulatory compliance.
Managing the entire project lifecycle, including planning, coordination, and delivery from concept to MVP and ongoing expansion.
Performing QA testing throughout development and for the launched MVP.
Providing full-of-expertise consulting on solution architecture, security implementation, partner ecosystem strategy, and business model of B2B/B2C segmentation.

Team Composition

Eugeny P.Software Developer

AnatolySoftware Developer

NatalyProject Manager

Daria V.Business Analyst

Received Feedback from the Client

Celadonsoft has successfully revitalized the software and added a useful backend admin platform. The team has also provided in-depth reporting on the deliverables and followed the agreed timeline. Overall, we have been pleased with their positive attitude, pricing, and on-time deliveries.